1998500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{571}}^1$

素因数の和:597

約数の個数: 48

約数和(自身を含む): 4996992

約数和(自身を除く): 2998492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 350, 500, 571, 700, 875, 1142, 1750, 2284, 2855, 3500, 3997, 5710, 7994, 11420, 14275, 15988, 19985, 28550, 39970, 57100, 71375, 79940, 99925, 142750, 199850, 285500, 399700, 499625, 999250, 1998500]

約数ペア:

[(1, 1998500), (2, 999250), (4, 499625), (5, 399700), (7, 285500), (10, 199850), (14, 142750), (20, 99925), (25, 79940), (28, 71375), (35, 57100), (50, 39970), (70, 28550), (100, 19985), (125, 15988), (140, 14275), (175, 11420), (250, 7994), (350, 5710), (500, 3997), (571, 3500), (700, 2855), (875, 2284), (1142, 1750)]